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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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ERJ2RKF4022X是松下(PANASONIC)推出的一款厚膜贴片电阻,采用0402(英制)小型封装,针对高密度电路设计场景优化,核心规格覆盖40.2kΩ阻值、±1%精度、100mW额定功率等,适用于便携电子、工业控制等对体积和精度有要求的领域。
该电阻属于松下厚膜贴片电阻系列中的高精度小功率型号,核心定位为小体积、高精度、宽温适应的基础无源元件。其核心规格明确:
40.2kΩ为E96系列精密电阻的标准阻值,±1%的精度意味着在25℃参考温度下,实际阻值范围为39.798kΩ~40.602kΩ,可满足信号调理、分压电路等对阻值一致性的要求。
额定功率100mW,最大工作电压50V。需注意两者的关联:在最大电压50V下,电阻实际功耗为 ( P = U^2/R = 50^2/40200 ≈ 62mW ),远低于额定功率,因此电压限制是实际使用中的主要约束条件,需避免超过50V的瞬时或持续电压。
温度系数(TCR)为±100ppm/℃,即温度每变化1℃,阻值变化±0.01%。结合工作温区-55℃~+155℃计算:
该电阻符合RoHS(无铅)、REACH等环保指令要求,满足全球电子市场的合规性需求。
0402封装是当前小型化电子设备的主流封装之一,尺寸仅1.0mm(长)×0.5mm(宽)×0.3mm(厚),可大幅提升PCB元件密度,适用于:
厚膜电阻的工艺特点(陶瓷基底+厚膜电阻浆料)决定了其具备较好的稳定性和抗环境应力能力:
ERJ2RKF4022X凭借小体积、高精度、宽温适应等特点,成为众多精密小功率电路设计的可靠选择,尤其适合对元件密度和可靠性有双重要求的应用场景。
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Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
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The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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